Supplementary documents appropriate to the ordered version come
with the delivery. You can find them listed in chapter "Product
description".
Instructions manuals for accessories and replacement parts
Tip:
To ensure reliable setup and operation of your VEGAFLEX 65, we
offer accessories and replacement parts. The corresponding documentations are:
l 27720 - VEGADIS 61
l 30207 - Electronics module VEGAFLEX series 60
l 34296 - Protective cover
l 31088 - Flanges according to DIN-EN-ASME-JIS-GOST
l 30391 - Spacer
Editing status: 2012-03-19
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus3
1 About this document
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important
instructions for maintenance and fault rectification. Please read this
information before putting the instrument into operation and keep this
manual accessible in the immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained qualified
personnel. The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbolism used
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can
result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
lList
The dot set in front indicates a list with no implied sequence.
àAction
This arrow indicates a single action.
1Sequence
Numbers set in front indicate successive steps in a procedure.
4VEGAFLEX 65 • Foundation Fieldbus
31848-EN-120329
2 For your safety
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must be
carried out only by trained specialist personnel authorised by the plant
operator.
During work on and with the device the required personal protective
equipment must always be worn.
2.2 Appropriate use
VEGAFLEX 65 is a sensor for continuous level measurement.
You can find detailed information on the application range in chapter
"Product description".
Operational reliability is ensured only if the instrument is properly used
according to the specifications in the operating instructions manual as
well as possible supplementary instructions.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbitrary
conversions or modifications are explicitly forbidden.
2.3 Warning about misuse
Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards, e.g. vessel overfill or damage to system
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a high-tech instrument requiring the strict observance of
standard regulations and guidelines. The user must take note of the
safety instructions in this operating instructions manual, the countryspecific installation standards as well as all prevailing safety
regulations and accident prevention rules.
The instrument must only be operated in a technically flawless and
reliable condition. The operator is responsible for trouble-free
operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new
regulations.
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus5
2 For your safety
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6 CE conformity
This device fulfills the legal requirements of the applicable EC
guidelines. By attaching the CE mark, VEGA provides a confirmation
of successful testing. You can find the CE conformity declaration in the
download area of "
www.vega.com".
2.7 Fulfillment of NAMUR recommendations
The device fulfills the requirements of the applicable NAMUR
recommendations.
2.8 Safety instructions for Ex areas
Please note the Ex-specific safety information for installation and
operation in Ex areas. These safety instructions are part of the
operating instructions manual and come with the Ex-approved
instruments.
2.9 Environmental instructions
Protection of the environment is one of our most important duties. That
is why we have introduced an environment management system with
the goal of continuously improving company environmental protection.
The environment management system is certified according to DIN
EN ISO 14001.
Please help us fulfil this obligation by observing the environmental
instructions in this manual:
l Chapter "Packaging, transport and storage"
l Chapter "Disposal"
6VEGAFLEX 65 • Foundation Fieldbus
31848-EN-120329
3 Product description
1
2
3
3.1 Structure
3 Product description
Scope of delivery
Constituent parts
The scope of delivery encompasses:
l Level sensor VEGAFLEX 65
l Documentation
- this operating instructions manual
- Operating instructions manual 27835 "Indicating and adjust-
- Ex-specific "Safety instructions" (with Ex versions)
- if necessary, further certificates
The VEGAFLEX 65 consists of the components:
l Process fitting with probe
l Housing with electronics
l Housing cover, optionally available with indicating and adjustment
module
Fig. 1: VEGAFLEX 65 with single chamber housing
1Housing cover with integrated indicating and adjustment module (optional)
2Housing with electronics
3Process fitting
Type label
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus7
The type label contains the most important data for identification and
use of the instrument:
l Article number
l Serial number
l Technical data
3 Product description
l Article numbers, documentation
With the serial number, you can access the delivery data of the
instrument via
www.vega.com, "VEGA Tools" and "serial numbersearch". In addition to the type label outside, you can also find the
serial number on the inside of the instrument.
3.2 Principle of operation
Application range
Functional principle
Power supply and bus
communication
DD/CFF
VEGAFLEX 65 is a level sensor with pipe probe for continuous level
measurement.
It is designed for industrial use in all areas of process technology and
can be used in liquids.
High frequency microwave pulses are guided along a steel rope or a
rod. Upon reaching the product surface, the microwave pulses are
reflected. The running time is evaluated by the instrument and
outputted as distance.
Power is supplied via the H1 Fieldbus. A two-wire cable according to
Fieldbus specification serves as carrier of both power and digital datafor multiple sensors. This cable can be operated in two versions:
l via an H1 interface card in the control system and additional power
supply
l via a Linking device with HSE (High speed Ethernet) and
additional power supply according to IEC 61158-2
The DD (Device Descriptions) and CFF (capability files) necessary for
planning and configuration of your FF (Foundation Fieldbus) communication network are available in the download area of the VEGA
homepage
www.vega.com under "Services - Downloads - Software -Foundation Fieldbus". The appropriate certificates are also available
there. A CD with the appropriate files and certificates can be ordered
via e-mail under info@de.vega.com or by phone from one of the VEGA
agencies under the order number "DRIVER.S".
The optional heating requires its own operating voltage. You can find
details in the supplementary instructions manual "Heating for indicat-
ing and adjustment module".
3.3 Operation
The instrument can be adjusted with the following adjustment media:
l With indicating and adjustment module
l with the suitable VEGA DTM in conjunction with an adjustment
software according to the FDT/DTM standard, e.g. PACTware and
PC
l a configuration tool
8VEGAFLEX 65 • Foundation Fieldbus
31848-EN-120329
3 Product description
3.4 Packaging, transport and storage
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
according to DIN EN 24180.
The packaging of standard instruments consists of environmentfriendly, recyclable cardboard. For special versions, PE foam or PE foil
is also used. Dispose of the packaging material via specialised
recycling companies.
Transport must be carried out under consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or
concealed defects must be appropriately dealt with.
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
l Not in the open
l Dry and dust free
l Not exposed to corrosive media
l Protected against solar radiation
l Avoiding mechanical shock and vibration
l Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
l Relative humidity 20 … 85 %
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus9
4 Mounting
4 Mounting
4.1 General instructions
Suitability for the process conditions
Mounting position
Welding work
Handling
Moisture
Make sure that all parts of the instrument exposed to the process, in
particular the sensor element, process seal and process fitting, are
suitable for the existing process conditions. These include above all
the process pressure, process temperature as well as the chemical
properties of the medium.
You can find the specifications in chapter "Technical data" and on the
type label.
Select an installation position you can easily reach for mounting and
connecting as well as later retrofitting of an indicating and adjustment
module. The housing can be rotated by 330° without the use of any
tools. You can also install the indicating and adjustment module in four
different positions (each displaced by 90°).
Before beginning the welding work, remove the electronics module
from the sensor. By doing this, you avoid damage to the electronics
through inductive coupling.
With threaded versions, the housing must not be used to screw in the
instrument! Applying tightening forces on the housing can damage its
internal parts.
Use the hexagon for screwing in.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This
applies mainly to outdoor mounting as well as installation in areas
where high humidity is expected (e.g. through cleaning processes) or
on cooled or heated vessels.
10VEGAFLEX 65 • Foundation Fieldbus
31848-EN-120329
Fig. 2: Measures against moisture penetration
4 Mounting
Measuring range
Pressure
Mounting position
The reference plane for the measuring range of the sensors is the seal
surface of the thread.
Keep in mind that a min. distance must be maintained below the
reference plane and possibly also at the end of the probe measurement in these areas is not possible. These min. distances are
listed in chapter "Technical data" in the "Supplement". Keep in mind
for the adjustment that the default setting for the measuring range
refers to water.
The process fitting must be sealed if there is gauge or low pressure in
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
The max. permissible pressure is specified in chapter "Technical data"
or on the type label of the sensor.
4.2 Instructions for installation
Mount VEGAFLEX 65 in such a way that the probe does not touch any
installations or the vessel wall during installation.
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus11
4 Mounting
In vessels with conical bottom it can be advantageous to mount the
sensor in the center of the vessel, as measurement is then possible
down to the lowest point of the vessel bottom.
Fig. 3: Vessel with conical bottom
Inflowing medium
Make sure that the probe is not subjected to strong lateral forces.
Mount VEGAFLEX 65 at a position in the vessel where no
disturbances, e.g. from filling openings, agitators, etc., can occur.
Fig. 4: Lateral load
Extreme vibration caused by the system, e.g. due to agitators or
turbulence in the vessel from inflowing medium, can cause the coax
probe of VEGAFLEX 65 to vibrate in resonance. With coax probes of
12VEGAFLEX 65 • Foundation Fieldbus
31848-EN-120329
4 Mounting
more than 1 m (3.281 in) length, you must secure the probe by
fastening a suitable isolated brace or guy directly above the end of the
rod.
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus13
5 Connecting to power supply
5 Connecting to power supply
5.1 Preparing the connection
Safety instructions
Voltage supply
Connection cable
Cable gland ½ NPT
Always keep in mind the following safety instructions:
l Connect only in the complete absence of line voltage
l If overvoltage surges are expected, overvoltage arresters should
be installed according to Foundation Fieldbus specification
Tip:
We recommend VEGA overvoltage arrester B63-32.
In hazardous areas you must take note of the respective regulations,
conformity and type approval certificates of the sensors and power
supply units.
The instrument requires a operating voltage of 9 … 32 V DC.
Operating voltage and the digital bus signal are carried on the sametwo-wire connection cable. Power is supplied via the H1 power supply.
Connection is carried out with screened cable according to Fieldbus
specification.
Use cable with round cross-section. A cable outer diameter of 5 … 9 mm
(0.2 … 0.35 in) ensures the seal effect of the cable gland. If you are
using cable with a different diameter or cross-section, exchange the
seal or use a suitable cable gland.
Make sure that the entire installation is carried out according to the
Fieldbus specification. In particular, make sure that the bus is
terminated with suitable terminating resistors.
On the instrument with cable entry ½ NPT and plastic housing there is
a metallic ½" threaded insert moulded into the plastic housing.
Caution:
No grease should be used when screwing the NPT cable gland or
steel tube into the threaded insert. Standard grease can contain
additives that corrode the connection between threaded insert and
housing. This would influence the stability of the connection and the
tightness of the housing.
Cable screening and
grounding
14VEGAFLEX 65 • Foundation Fieldbus
With systems with potential equalisation, connect the cable screen
directly to ground potential at the power supply unit, in the connection
box and at the sensor. The screen in the sensor must be connected
directly to the internal ground terminal. The ground terminal outside on
the housing must be connected to the potential equalisation (low
impedance).
31848-EN-120329
5 Connecting to power supply
In systems without potential equalisation, connect the cable screen
directly to ground potential at the power supply unit and at the sensor.
In the connection box or T-distributor, the screen of the short stub to
the sensor must not be connected to ground potential or to another
cable screen. The cable screens to the power supply unit and to the
next distributor must be connected to each other and also connected
to ground potential via a ceramic capacitor (e.g. 1 nF, 1500 V). Lowfrequency potential equalisation currents are thus suppressed, but the
protective effect against high frequency interference signals remains.
The total capacitance of the cable and of all capacitors must not exceed
10 nF in Ex applications.
Take note of the corresponding installation regulations for Ex
applications. In particular, make sure that no potential equalisation
currents flow over the cable screen. In case of grounding on both sides
this can be achieved by the use of a capacitor or a separate potential
equalisation.
5.2 Connection procedure
Proceed as follows:
1 Unscrew the housing cover
2 If an indicating and adjustment module is installed, remove it by
turning it to the left.
3 Loosen compression nut of the cable entry
4 Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
5 Insert the cable into the sensor through the cable entry
6 Lift the opening levers of the terminals with a screwdriver (see
following illustration)
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus15
5 Connecting to power supply
7 Insert the wire ends into the open terminals according to the wiring
plan
Fig. 5: Connection steps 6 and 7
8 Press down the opening levers of the terminals, you will hear the
terminal spring closing
9 Check the hold of the wires in the terminals by lightly pulling on
them
10 Connect the screen to the internal ground terminal, connect the
outer ground terminal to potential equalisation
11 Tighten the compression nut of the cable entry. The seal ring must
completely encircle the cable
12 Screw the housing cover back on
The electrical connection is finished.
5.3 Wiring plan, single chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-ia
version.
16VEGAFLEX 65 • Foundation Fieldbus
31848-EN-120329
I²C
3
4
5
1
2
Display
Ty p:
1 25 6 7 8
Bus
Sim.
I2C
Display
1
1 25
6 7 8
Electronics and connection compartment
Wiring plan
5 Connecting to power supply
Fig. 6: Electronics and connection compartment, single chamber housing
1Plug connector for VEGACONNECT (I²C interface)
2Spring-loaded terminals for connection of the external indication VEGADIS
61
3Ground terminal for connection of the cable screen
4Spring-loaded terminals for Foundation Fieldbus connection
5Simulation switch ("on" = mode for simulation release)
Fig. 7: Wiring plan, single chamber housing
1Voltage supply, signal output
5.4 Wiring plan, double chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-ia
31848-EN-120329
VEGAFLEX 65 • Foundation Fieldbus17
version.
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